CVE-2023-27373: Input Validation
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Due to insufficient input validation, an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR setting to overlap SMRAM.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2023-27373?
CVE-2023-27373 is an issue discovered in Insyde InsydeH2O with kernel 5.0 through 5.5, where an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR setting to overlap SMRAM.
How does CVE-2023-27373 affect Insyde InsydeH2O?
CVE-2023-27373 affects Insyde InsydeH2O versions 5.0 through 5.5 by allowing an attacker to tamper with an EFI variable and cause a dynamic BAR setting to overlap SMRAM.
What is the severity of CVE-2023-27373?
The severity of CVE-2023-27373 is rated as medium with a severity value of 5.5.
How can I fix CVE-2023-27373?
To fix CVE-2023-27373, it is recommended to update Insyde InsydeH2O to a version that is not affected by this vulnerability.
Where can I find more information about CVE-2023-27373?
You can find more information about CVE-2023-27373 at the following reference: [https://www.insyde.com/security-pledge/SA-2023035](https://www.insyde.com/security-pledge/SA-2023035)